Firearm.



G. S. LEWIS.

FIREARM.

APPLICATION FILED AUG.18, 191s.

, Patented Feb. 10, 1914.

8 SHEETS-SHEET 2.

G. ,s. LEWIS;

FIREARM.

APPLICATION FILED AUG-.18, 191s.

Patented Feb. 10, 1914 v m entbr:

of improvements, as will be understood, are

barren arenas ra rnn'r orrien enoncn s. LEWIS, or SPRINGFIELD, nassacn nsnrrs, assrenon'ro a'is'rnvn nsnnns & r001. COMPANY, or cnrcornn FALLS, ranssaonusnrrs, a conroearron or MASSACHUSETTS.

Specification of Letters ran e,

rate eeret. in, rare I '0 all whom it may concern 3 Be it known that I, Gronen S. Lnwis, acitizen of the United States, residin in Springfield, Hampden county, State of assachusetts, have invented certain new and useful Improvements in Firearms, of which the following is a specification, reference being hadto the accompanying drawings, which form a part hereof.

This invention is. particularly concerned with the lock mechanism of sporting guns.

It is shown and described herein as sinbodied in a double-barreled, breech-loading shotgun to which some of the improvements are especially applicable, but other features \appli'cable also to other types of firearms.

The immediate object of the invention is to sim lify construction and reduce the numer 0 parts, thereby lessening the mat of anufacture' and liability to derangement .and breakage, but safety in use is also a consideration'.

Elie hammer is of the rebounding type and some of the features of the invention q relate thereto. The triggers are arranged in tandem but in such a manner that the leverage and consequently the pull of the two tri gers is the same.

" gther' features of improvement will be referred to hereinafter.

Isa

. poses of explanation of the invention, the

parts being shown in the positions which they occupy when the left hand hammer is down andthe right hand hammer is cooked, the latter being shown lo dotted lines. Fig. 3 is a view similar: to Fig. 2, with the parts in the positions which they occup when the right hand trigger has been pul ed, the rebound position of the tumbler being indicated by dotted lines. Fig. 4 is a top view partly broken out toish'ow the hammei springs, the

top lever actuating: rod hung shown in dotted lines. 'Fig. 5 is a view in section on the plane indigated by theabrdkenline 5--5 ofFig. 2Q Fi .6 is a view in section on the lane indicate lay the broken l-ine'66 o f- 21' Fig. Z' isa viewin perspective of the hammer alone. 1

.The frame, trigger plate and tang, which are usually made 1n separate pieces, in this construction are made'in one integral piece.

the right hand tumbler and bushing. l ig;

d which together may be called the frameQ In this frame are mounted all ofthe movable parts.

Each hammer f, having as usual a square hole, is held by a screw 7" upon a squared end of a corresponding tumbler g. The latterlha'sat its inner end a it is mounted in a suit-able bearing 111 an in; tegral rib d of the frame (1, the rib d" furnishing a'bea-ring for both tumblers g. Each a bushing 71. which is seated in the side of stud gf by which tumbler, near its outer 'end,has a bearinginn the frame and has a shoulder 71'. The two bushings are held in place respectively by the head i of a rod z', on one side-and, on the other side, by the head of ascrew i which is tapped into the rod 2'. which passes through the I'rame. Each tumbler is formed, near its inner end, with a main spring lu 9 which has a socket g to receive the end of opposite the main spring lug g withj'a sear he a The. main spring plunger 6, havinga head is, with a conical point is? to 'coiiper ate with the main spring lug g and a rebound shoulder '11, is guided'at its rear end in the sleeve is, suitably supported at the rear end of thefram and receives the coiled main spring It. The shoulder is of the head of the main spring plunger cooperates with the rod 2' above mentioned for the pur- I so the main spring plunger, and, diametrically pose of limiting the forward movement of the main spring plunger and of relieving the hammer oi the pressure of the sprin k 1 before the hammer reaches the limit 0' its forward movement, so that the .efiectiye,

movement of the-hammefiipon the firing pin: 2; is accomplishedby the momentum of at m and'a respectivel the forward arm nt-jot the tr gger-m bears the'sam e relation to the lower arm at that the forward arm n of the trigger n bears to the lower arm n, by reason of the pivoting of the trigger n at a point above and to the rear of the pivot m of the trigger, so that the two triggers have the sameleverage and the same pull. The two triggers are so shaped that the arms m and n are in line, 'while the arms m and n are ofi'set so that they may engage properly with the respective sear lugs. The two triggers are acted upon by a'single, common trigger spring 0 which has a middle co il, hung upon the pivot 41', while its ends engage respectively'a pin m on the trigger m and a pin a on the trigger n,v Not only is the construction sim plified and the number of parts reduced by arranging one spring to act upon both triggers, but, as will be observed, this is a feature of safety, for as pressure is put upon one trigger, by the finger, to release it, the pressure of the spring against the other trigger, to hold it in place is increased, so thatthere is less liability of an unintentional movement of the second trigger when either one is pulled. i When either hammer is released, it swings forward, under the influence of the main spring k until the shoulder It strikes against the rod 2'. and thereafter the movement of the hammeris continued by its momentum alone. The sear lug on each tumbler is formed forward of the forward notch, with a cam projection which, when thehammer is in its extreme forward position, rests against the extremity of the arm m or n of the spring-pressed trigger. The action of, the trigger arm under the influence of the spring against the cam surface is to cause the hammer to swing back from the firing pin or to rebound, so that the hammer is left free of the firing pin when it comes to rest. By this construction the employment of a separate rebounding spring or the construction of the main spring plunger to enact on the tumbler is avoided and a simple and efficient means for eliecting the rebounding of the hammer is provided.

For further simplification of the gun, the spring 6 for the top lever c is arranged to act directly upon the top' lever through a plunger rod e which is upturned at its for ward end, as at e, to pass through aislot (not shown) in the top of the frame and enter a recess, indicated at e, in the underside of the top lever e. The rod 0 is provided 'with'a-shouldere against which the forward end of the spring 6 may bear and its rear end'is aided in a hollow screwfe" which is threa ed in the rear end of' the frame and bears against the'rear end of the sprihg e" J The vertical frame (1, chambered at a to receive, between the forward solid portion d and the rear solid portiond the various 5 moving parts referred to above, is set into the forward end of the stock a, as clearly shown in the drawings, and is' secured in place therein by a long screw d which is passed through the stock from'the rear and is tapped into therear end (i of the frame. With this construction no,other screws are required to hold the stock and frame together.

It will now be understood that some of the features of the invention referred to are capable of application to single barreled firearms and that the several features of the invention are not necessarily employed together in one structure but may be 0 employed independently. It will also be evident that the invention is. not restricted .to the details of construction shown and described herein.

I claim as my invention 5 1. In a firearm, the combination of 'a frame, a hammer tumbler mounted therein, I a flanged bushing mounted in the frame and supporting one end of the tumbler and a screw rod extended across the frame and having a head to engage the flange of the bushing andretain the same in position.

2. In a double-barreled firearm, the com-- bination of. a frame, hammer tumblers mounted .threin and having each a. "S &1"95 lug anditriggers mounted in the frame and cooperating with the sear lugs, the triggers being pivoted at different points in the frame one in advance of the other whereby both triggers may have the same leverage.

$3. In a firearm, the combination of a frame, triggers pivoted separately in the frame one in advance of the other and a single, common trigger spring cooperating with both triggers.

' 4. In a firearm, the combination of a frame, hammer tumblers mounted in the frame and having each a sear lug, and triggers mounted in the frame in tandem, the pivot of one of the triggers being above and behind the pivot ofth'e other whereby the triggers have the same leverage.

5. In a firearm, the combination of a. frame. triggers mounted therein in tandem.

trigger spring having a central coil about a pivot between the pivots of'the' triggers and having its-ends cooperatingwith the triggers respectively.

This specification signed and witnessed 120 this llth'day of August A. D., 1913.

GEORGE s. LEWIS.

Signed in the presence of E. M. TAYnon, Won'rnmo'ron CAMPBELL.

on independent pivots and a single, common I 

